Peyton Manning beat the Chiefs on Sunday before handing out autographs. / Denny Medley, US Presswire

by Lindsay H. Jones, USA TODAY Sports

by Lindsay H. Jones, USA TODAY Sports

ENGLEWOOD, Colo. - Peyton Manning can't even provide a ballpark figure of how many autographs he's signed in his career, from the time he started his first game at the University of Tennessee through his 15 seasons in the NFL.

Plenty of times, Manning said Wednesday, those signature requests have come from other pro players.

So when Kansas City Chiefs running back Jamaal Charles asked Manning for his John Hancock on the field at Arrowhead Stadium after the Denver Broncos' 17-9 win Sunday, Manning thought it was no big deal.

"You sign for somebody's brother or mother or a fan - that's what you do," Manning said.

"Players constantly are trading. You're signing for teammates, and everybody's got a high school auction or something. That's part of the deal."

A television camera caught the exchange, and it caused quite a stir on the Internet and the Kansas City airwaves in the days since. The viral video caused Charles' request to get "blown way out of proportion," Manning said.

"I don't even know why that camera man was in that zone.That was kind of annoying," Manning said.